72 MR. T. SCOTT ON ENTOMOSTRACA 



lirst four pairs of swimming-feet resemble those of ^tidius armatus, except that the 

 second joint of the inner branch of the second pair is shorter than the other. Fifth pair 

 in the male small, each composed of a basal joint and two 1-jointed branches ; the outer 

 branch is comparatively large and bears two small unequal teeth at the extremity ; the 

 inner branch is small and rudimentary, with a rounded end. Abdomen in both sexes 

 composed of five (?) segments, the last segment very small, the other segments in the male 

 al)domen subequal ; in that of the female the first segment is large and tumid, the 

 second smaller, while the third and fourth are about equal and smaller than the second. 

 Caudal stylets short and broad, and furnished with four long and two very small 

 terminal plumose setse. 



HaUtat. Lat. 1° 55' 5" N., long. h° 55' 5" E., 360 and 460 fathoms, January 22nd 

 (day collection). Station 23, 135 fathoms, February 5th (day collection), ^tkl'ms 

 armiger, of which only two or three specimens have been obtained, is quite distinct 

 from ^. armatus, being readily distinguished by the difference in the form of the male 

 fifth feet, and by the peculiar spiny armature of the forehead and last thoracic segment. 



Genus Clausocalanus, Giesbrecht, 1888. 

 Drepanopus, Brady (in part). 



Clausocalanus fukcatus (Brady). 



1883. Drepanopus furcatus, Brady, Report of the ' Challenger ' Copepoda, p. 77, pi. iv. figs. 1 & .2 ; 



pi. xxiv. figs. 12-15. 

 1892. Clausocalanus furcatus, Giesbrecht, Fauna und Flora des Golfes von Neapel (Copepodeu) , 



p. 194, pi. xxxvi. figs. 32, 33, 35. 



Hahltat. Station 2, 25 fathoms (night collection), January 1st. Lat. 3° 58' N., long. 

 3° 42' W., 25 fathoms (day collection), January 13th. Off Sao Thome Island (lat. 

 O'^ 34' N., long. 6" 30' 4" E.), 10 fathoms, January 23rd (day collection). Station 23, 

 10 fathoms, February 5th (day collection). Lat. 6° 39' 5" S., long. 11° 24' 7" E.. surface, 

 February 8th (night collection), &c. 



This species occurred in 20 tow-nettings, 3 of which were surface and 17 under-surface 

 gatherings. The under-surface gatherings were from various depths ranging from 2^ to 

 50 fathoms. The 3 surface tow-nettings were night collections ; 11 of the under- 

 surface were day and were night collections, as shown by the formula : — 



rno day collections. 



..• onf ^'^'"^^^^ I 3 night ditto. 



Tow-nettmgs 20< ^„ , "^ ,., 



1 17 under-surface Pl ^^^y ^1^*^. 



L 6 nisht ditto. 



Clausocalanus latipes, n. sp. (Provisional name.) (PL VIII. figs. 28-37.) 

 Female. Anterior antennse long and slender, provided with a very few short setae and 



